State interview questions

12 State questions from the Functional Programming bank, written for Indian campus drives and tech interviews. Every question has a verified answer and an AI-tutor explanation on placd.

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1. What is Shared mutable state?

Mid
  1. A.the property that applying an operation many times yields the same result as applying it once
  2. B.the property that a computation always produces the same output for the same input
  3. C.data that can be both read and changed by multiple parts of a program, a frequent cause of concurrency bugs
  4. D.an architecture that isolates pure logic at the center and pushes side effects to a thin outer layer

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2. Which term means: "data that can be both read and changed by multiple parts of a program, a frequent cause of concurrency bugs"?

Mid
  1. A.Functional core imperative shell
  2. B.Idempotence
  3. C.Determinism
  4. D.Shared mutable state

Answer + AI explanation with Pro

3. Which statement is correct?

Mid
  1. A.Shared mutable state — data that can be both read and changed by multiple parts of a program, a frequent cause of concurrency bugs
  2. B.Shared mutable state — the property that applying an operation many times yields the same result as applying it once
  3. C.Shared mutable state — an architecture that isolates pure logic at the center and pushes side effects to a thin outer layer
  4. D.Shared mutable state — the property that a computation always produces the same output for the same input

Answer + AI explanation with Pro

4. What is Functional core imperative shell?

Senior
  1. A.an architecture that isolates pure logic at the center and pushes side effects to a thin outer layer
  2. B.data that can be both read and changed by multiple parts of a program, a frequent cause of concurrency bugs
  3. C.the property that a computation always produces the same output for the same input
  4. D.the property that applying an operation many times yields the same result as applying it once

Answer + AI explanation with Pro

5. Which term means: "an architecture that isolates pure logic at the center and pushes side effects to a thin outer layer"?

Senior
  1. A.Functional core imperative shell
  2. B.Shared mutable state
  3. C.Determinism
  4. D.Idempotence

Answer + AI explanation with Pro

6. Which statement is correct?

Senior
  1. A.Functional core imperative shell — data that can be both read and changed by multiple parts of a program, a frequent cause of concurrency bugs
  2. B.Functional core imperative shell — an architecture that isolates pure logic at the center and pushes side effects to a thin outer layer
  3. C.Functional core imperative shell — the property that applying an operation many times yields the same result as applying it once
  4. D.Functional core imperative shell — the property that a computation always produces the same output for the same input

Answer + AI explanation with Pro

7. What is Idempotence?

Mid
  1. A.the property that a computation always produces the same output for the same input
  2. B.data that can be both read and changed by multiple parts of a program, a frequent cause of concurrency bugs
  3. C.an architecture that isolates pure logic at the center and pushes side effects to a thin outer layer
  4. D.the property that applying an operation many times yields the same result as applying it once

Answer + AI explanation with Pro

8. Which term means: "the property that applying an operation many times yields the same result as applying it once"?

Mid
  1. A.Determinism
  2. B.Idempotence
  3. C.Functional core imperative shell
  4. D.Shared mutable state

Answer + AI explanation with Pro

9. Which statement is correct?

Mid
  1. A.Idempotence — the property that a computation always produces the same output for the same input
  2. B.Idempotence — data that can be both read and changed by multiple parts of a program, a frequent cause of concurrency bugs
  3. C.Idempotence — an architecture that isolates pure logic at the center and pushes side effects to a thin outer layer
  4. D.Idempotence — the property that applying an operation many times yields the same result as applying it once

Answer + AI explanation with Pro

10. What is Determinism?

Mid
  1. A.the property that applying an operation many times yields the same result as applying it once
  2. B.the property that a computation always produces the same output for the same input
  3. C.data that can be both read and changed by multiple parts of a program, a frequent cause of concurrency bugs
  4. D.an architecture that isolates pure logic at the center and pushes side effects to a thin outer layer

Answer + AI explanation with Pro

11. Which term means: "the property that a computation always produces the same output for the same input"?

Mid
  1. A.Shared mutable state
  2. B.Idempotence
  3. C.Determinism
  4. D.Functional core imperative shell

Answer + AI explanation with Pro

12. Which statement is correct?

Mid
  1. A.Determinism — the property that a computation always produces the same output for the same input
  2. B.Determinism — the property that applying an operation many times yields the same result as applying it once
  3. C.Determinism — data that can be both read and changed by multiple parts of a program, a frequent cause of concurrency bugs
  4. D.Determinism — an architecture that isolates pure logic at the center and pushes side effects to a thin outer layer

Answer + AI explanation with Pro

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